Millstone-bush



(No Model.)

' D. A. BELLOWS.

MILLSTONE BUSH. No. 335,418. Patented Feb. 2, 1886.

I v a I11 u NrrEn STATES I ATENT OFFICE.

DANIEL A. BELLOVS, OF MULBERRY, GEORGIA.

MlLLSTONE-BUSH.

BPECIFICATION forming part of Letters Patent No. 335,418, dated February2, 1886.

Application filed July 16, 1885. Serial No. 171.761. (No model.)

To all whom it may concern:

Be it known that I, DANIEL A. BnLLows, a citizen of the United States,residing at Mulberry, in the county of Jackson and State of Georgia,have invented certain new and use ful Improvements inllIillstone-Bushes; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to bushes for millstonespindles, and has for itsobject to provide a device of this character which shall be simple inits construction, strong and durable, and not likely to get out oforder, and one whereby the friction will be reduced to a minimum.

\Vith these ends in view the invention consists in the improvedconstruction and combinations of parts hereinafter fully described, andpointed out in the claim.

In the drawings, Figure l is a perspective view of my invention. Fig. 2is awertical section. Fig. 3 is a horizontal section. Fig. 4 is a detailperspective view of one of the heari ng-blocks.

In the accompanying drawings, in which like letters of referenceindicate corresponding parts in all the figures, A represents a framecomposed of thetop and bottom plates, B 0, connected at their corners byverticallyarranged posts D, which support the top and bottom plates inposition and brace and strengthen the same. The top and bottom plates,BO, are provided with central openings. (1, for the passage of thespindle b, and secured to the upper side of the upper plate, B, is aplate, E, having astut'tmg box to exclude dust from the spindle, theupper end of the spindle passing through an opening in said plate E.

F represents a series of vertically-disposed rollers, which bear againstthe spindle. The

ends of these rollers are reduced, and have bearing in slots or openings0, in which slots or openings are located bearing-blocks e, which aresomewhat smaller than the openings in the top and bottom plates. Thesebearing-blocks are provided with outwardly-extending top and bottomflanges f, which bear against the upper and under sides of said plates BU adjacent to the openings therein, thus preventing the verticalmovement of said blocks, but allowing them to be moved to or from thespindle, said blocks having semicircular recesses f on their inner sidesto receive the reduced ends of the rollers.

G represents keys, which are wedgeshaped in form, their upper endsfitting in the openings of thetop plate behind the bearing-blocks. Thelower ends of these keys are threaded and pass through the openings ofthe lower plate, bearing against the outer sides of the bearingblocks.Engaging the threaded lower ends of the keys are thumb-nuts f, bytightening which the bearing-blocks are caused to move toward thespindle from-the fact that said keys are wedge-shaped.

The bush before described is simple in its construction, strong anddurable, prevents undue friction, and affords a firm bearing for thespindle.

I claim and desire to secure by Letters Patent In a millstone-bush, thecombination, with a frame and the spindle C,journaled therein, of therollers journaled in the frame and hearing againstthe spindle, saidrollers having reduced ends,the adj ustingblocks having flanges f,wedges bearing against the outer sides of the blocks, and nuts to engagethe threaded ends of the wedges, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

DANIEL A. BELLOWS.

\Vitnesses:

JAMES B. SILMAN, LEwIs Y. BRADBURY.

